POLICY-OTHER cryptomining javascript client detected message

[Precision]

While running organization summary report in dashboard, i got the message below.

Does anyone know what this means and how i can dig deeper to check this?

Signature	# Threats
POLICY-OTHER cryptomining javascript client detected	1

[PhilipDAth]

It means a machine was discovered with a javascript crypto mining agent on it.  You have a compromised machine.

[Uberseehandel]

Because we live in a hetero world, computer/phone-wise, I use quite a fussy 3rd party firewall on the various client devices, rather than just the default. At times it can be fiddly, however, the kind of crypto-mining you described would have been stopped, and a warning sent to my phone that there was a security issue.

It is not free software, but not expensive. It is good enough that I renewed my subscription, and its name begins with B.